Question

A `1kg` stone at the end of `1m` long string is whirled in a vertical circle at a constant speed of `4m//s`. The tension in the string is `6N`, when the stone is at `(g=10m//s^(2))`
A. top of the circle
B. bottom of the circle
C. halfway down
D. none of these

Answer 1

Correct Answer - A
At top of the circle
`T=(mv^(2))/(l)-mg`